Habitat shifts in response to predation risk are constrained by competition within a grazing guild by Droge, E, Creel, S, Becker, MS, Goodheart, B, Reyes de Merkle, J, M'soka, J, Rosenblatt, E, Mweetwa, T, Mwape, H, Vinks, MA, Smit, D, Sanguinetti, C, Dart, C, Christianson, D, Schuette, P, Simpamba, T, Chifunte, C